How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
birds and reptiles
fishes and birds
reptiles and fishes
birds and molluscs
Correct answer is A
Its long been recognized that birds and reptiles share many characteristics:
Both have skulls that abut the first neck vertebra with a single ball-and-socket joint.
Both birds and reptiles excrete nitrogenous wastes as uric acid; mammals excrete urea, fish ammonia.
Both lay similar highly yolked eggs
Bird feather is homologous to the reptile scale. Both develop from an epidermal elevation over a nourishing dermal core. Scales flatten, feather buds roll into a cylinder shaped tube.
The product after the union of the male and female gamete in animals is called
sperm
egg
embryo
zygote
Correct answer is D
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube.
The result of this union is the production of a zygote cell, or fertilized egg, initiating prenatal development.
Use the diagram to answer the question that follows
omnivores
herbivores
canivores
omnivores and canivore
Correct answer is A
No explanation has been provided for this answer.
The difference in structure, morphological and behavior of plant and animal is called
adaptation
evolution
variation
succession
Correct answer is C
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
Variation may be shown in physical appearance, metabolism, fertility, mode of reproduction, behaviour, learning and mental ability, and other obvious or measurable characters.
The protista that is a producer in an aquatic food chain is
trypanosome
paramecium
chlamydomonas
amoeba
Correct answer is C
Protists are single celled organisms that contain chloroplasts to aid photosynthesis.
Algae → Protozoa → Small Insects → Large aquatic Insects → Small fish → Large fish